io.cdap.wrangler.service.directive

Class UserDirectivesCollector

java.lang.Object

io.cdap.wrangler.service.directive.UserDirectivesCollector

All Implemented Interfaces:

GrammarWalker.Visitor<RuntimeException>

public class UserDirectivesCollector
extends Object
implements GrammarWalker.Visitor<RuntimeException>

This Visitor collects user directives and helps to add #pragma directive to load them to the script

Constructor Summary

Constructors

Constructor and Description
UserDirectivesCollector()

Method Summary

Modifier and Type	Method and Description
void	addLoadDirectivesPragma(List<String> directives) If any user directives was found, adds load-directives pragma as the first command.
void	visit(String command, TokenGroup tokenGroup)

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

UserDirectivesCollector

public UserDirectivesCollector()

Method Detail

visit

public void visit(String command,
                  TokenGroup tokenGroup)

Specified by:

visit in interface GrammarWalker.Visitor<RuntimeException>

addLoadDirectivesPragma

public void addLoadDirectivesPragma(List<String> directives)

If any user directives was found, adds load-directives pragma as the first command.